Instantly verify the authenticity of any digitally signed PDF. Check eIDAS, ZertES, and X.509 signatures — free, public, no account needed.
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Powered by chvalidator.ch — built by Swiss Trust Layer AG
No software to install. Works in any browser. Results are instant.
Supports PDF files with embedded digital signatures. No file size limits for standard documents.
The validator checks the cryptographic signature chain, issuing CA, certificate expiry, and timestamp integrity in seconds.
See who signed the document, when, with which certificate, and whether any content was modified after signing.
Validates Swiss qualified electronic signatures per SR 943.03
Accepts EU-standard QES and AES signatures from all member states
Checks RFC 3161 timestamps so you know exactly when the document was signed
No. The validator is completely free and public. No registration, no login, no payment.
eIDAS (EU), ZertES (Switzerland), UAE Pass, and standard X.509 PDF signatures — including QES and AES levels.
No. Only the signature metadata (certificate, hash, timestamp) is processed. Your document content is never stored.
An invalid result means either the document was modified after signing, the certificate has expired, or the signature was applied with an untrusted CA. Contact the document sender for a fresh signed copy.
Yes — Swiss Trust Layer lets you seal any intellectual property with a court-proof timestamp in under 2 minutes. Backed by Swisscom Trust Services.
Swiss Trust Layer gives you a court-proof, tamper-evident timestamp for any intellectual property — in under 2 minutes.